Abstract: α-layered zirconium phosphate was obtained by direct precipitation method. Composites formed by α-zirconium phosphate and fumed silica were prepared by dispersing predetermined molar ratios of polycrystalline α-zirconium phosphate and fumed silica in water. Admittance measurement of the samples was made in a sealed cell connected to a Hewlett Packard 4192A impedance analyzer in the frequency range from 5 Hz to 1 MHz. All of the samples with varing molar ratios of α-zirconium phosphate to silica at 60%, 40% relative humiditites have the same approximate Arrhenius activation energies, around 48 kJ·mol~(-1), that means the charge transport mechanism was maintained after mixing fumed silica into α-layered zirconium phosphate.

Key words: Zirconium phosphate, Silica, Conductivity